Merge "Revert "SurfaceFlinger: add a sysprop for GL backpressure"" into qt-dev am: de17b13a2f

am: 65dc300533

Change-Id: Idcbc2f5580e8b4a69f490e2f7f3b143be81406e4

2 files changed, 3 insertions, 9 deletions

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index e892a6c273..051eef4dc8 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -358,11 +358,6 @@ SurfaceFlinger::SurfaceFlinger(Factory& factory) : SurfaceFlinger(factory, SkipI
     mPropagateBackpressure = !atoi(value);
     ALOGI_IF(!mPropagateBackpressure, "Disabling backpressure propagation");
 
-    property_get("debug.sf.enable_gl_backpressure", value, "0");
-    mPropagateBackpressureClientComposition = atoi(value);
-    ALOGI_IF(mPropagateBackpressureClientComposition,
-             "Enabling backpressure propagation for Client Composition");
-
     property_get("debug.sf.enable_hwc_vds", value, "0");
     mUseHwcVirtualDisplays = atoi(value);
     ALOGI_IF(mUseHwcVirtualDisplays, "Enabling HWC virtual displays");
@@ -1742,9 +1737,9 @@ void SurfaceFlinger::onMessageReceived(int32_t what) NO_THREAD_SAFETY_ANALYSIS {
                 break;
             }
 
-            if (frameMissed && mPropagateBackpressure) {
-                if ((hwcFrameMissed && !gpuFrameMissed) ||
-                    mPropagateBackpressureClientComposition) {
+            // For now, only propagate backpressure when missing a hwc frame.
+            if (hwcFrameMissed && !gpuFrameMissed) {
+                if (mPropagateBackpressure) {
                     signalLayerUpdate();
                     break;
                 }
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 719c98f18b..a53b3cbcac 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -1023,7 +1023,6 @@ private:
     volatile nsecs_t mDebugInTransaction = 0;
     bool mForceFullDamage = false;
     bool mPropagateBackpressure = true;
-    bool mPropagateBackpressureClientComposition = false;
     std::unique_ptr<SurfaceInterceptor> mInterceptor;
     SurfaceTracing mTracing{*this};
     bool mTracingEnabled = false;